Data Retention

These settings define the number of days that data is retained in the Discover databases.

Note: The Data Retention settings apply to a deprecated method of generating Discover alerts, which has been superseded by the Discover Alert Service. These settings should not be changed. For more information on the current method, see "Configuring the Alert Service" in the Unica Discover Configuration Manual.
Table 1. Data Retention
Setting Description Default
Collector Data - Buffer Hours The number of hours of canister data to keep in the reporting database for recovery, if the system falls behind. If Trim Collected Data Immediately is enabled, then this setting has no effect.
Note: Do not change this setting unless directed by Discover.
 2
Usability Data (daily) - Days Retain

Number of days to retain daily Usability data that is used for performance reports. This setting trims the data from the database to keep the database from growing too large.

 90
Usability Data (hourly) - Days Retain

Number of days to retain hourly Usability data that is used for performance reports. This setting trims the data from the database to keep the database from growing too large.

 3
Dimension Log Capture Days

Defines the number of days to log a dimension. Logging of the dimension is disabled after the defined number of days have expired.

Dimension logging may be enabled and disabled per dimension in the dimension's definition. See "Dimensions Tab" in the Unica Discover Event Manager Manual. Dimension logging may be enabled and disabled per dimension in the dimension's definition. See "Dimensions Tab" in the Unica Discover Event Manager Manual.

 14
Dimension Log Data-Days Retain Number of days to retain log data for dimensions.

The number of days to retain data is relative to the last instance of a reference value being detected in the traffic. When a new instance of the value has been detected, the number of days for that dimensional value is reset to zero.

 30
Dimension Trim - # of Most Recent Values to Keep

The maximum number of values to retain for any dimension at any time. If the number of retained values is above this limit when the Data Collector executes, the most recent values as determined by this setting are retained, and all older values are trimmed.

See "Data Management for Dimensions" in the Unica Discover Event Manager Manual.

 750,000
Performance Data (daily) - Days Retain Number of days to retain daily performance data that is used for performance reports. This setting trims the data from the database to keep the database from growing too large. 365
Performance Data (hourly) - Days Retain Number of days to retain hourly performance data that is used for performance reports. This setting trims the data from the database to keep the database from growing too large. 30
Reporting Data (daily)-Days Retain Controls the retention of daily-level reporting data.
Note: Do not change this setting unless directed by Discover.
 365
Reporting Data (hourly)-Days Retain Controls the retention of hourly-level reporting data.
Note: Do not change this setting unless directed by Discover.
 30
Service Monitor Log Data - Days Retain Number of days to retain the Data Collector Service Monitor data. 30
System Processing Stats-Days Retain Number of days to keep the hourly statistics data. 30
Anomaly Detection Data (daily)-Days Retain Controls the retention of daily-level Anomaly Detection data.
Note:
  1. Do not change this setting unless directed by Discover.
  2. This setting must be configured in conjunction with the Anomaly Detection - Minimum data points for calculations and Anomaly Detection - Maximum data points for calculations settings, which define the minimum and maximum number of data points to retain. Since each retained data point corresponds to a week of data, your retention period settings must be configured to be greater than the minimum and less than or equal to the maximum data points. Multiply the data point settings by 7 to make the comparison to this setting.
 365
Anomaly Detection Data (hourly)-Days Retain Controls the retention of hourly-level Anomaly Detection data.
Note:
  1. Do not change this setting unless directed by Discover.
  2. This setting must be configured in conjunction with the Anomaly Detection - Minimum data points for calculations and Anomaly Detection - Maximum data points for calculations settings, which define the minimum and maximum number of data points to retain. Since each retained data point corresponds to a week of data, your retention period settings must be configured to be greater than the minimum and less than or equal to the maximum data points. Multiply the data point settings by 7 to make the comparison to this setting.
 120
User Activity Log Data-Days Retain Number of days to keep the Portal user activity history data. 90
Usability Data - Delete data for trimmed "ScreenView URL" dimension values Enabled